Leave the ESD strap permanently connected to the rack, so that the strap is always available when you
need to handle ESD-sensitive components.
Install an 1100 W Internal DC Power Supply
The ExtremeSwitching X690 and X870 series switches accommodate one or two Summit 1100 W power
supply units (PSUs) with either front-to-back or back-to-front airflow.
Note
You cannot combine power supplies of dierent wattages in the same switch.
To install a Summit 1100 DC power supply, refer to the following sections as needed:
1 Make sure you have the tools and materials you need.
See Required Tools and Materials for Installing an 1100 W DC Power Supply on page 206.
2 Prepare the power cables and ground cable by attaching the provided connection lugs to the cables.
See Preparing the Cables for an 1100 W DC Power Supply on page 206.
3 Insert the power supply into the switch.
See Installing an 1100 W DC Power Supply on page 207.
4 Connect the ground wire.
See Connecting the Ground Wire to an 1100 W DC Power Supply on page 208.
5 Connect the power supply to the electrical source and energize the DC circuit.
See Connecting an 1100 W DC Power Supply to the Source Voltage on page 209.
Required Tools and Materials for Installing an 1100 W DC Power Supply
You need the following tools and materials to install or remove an 1100 W DC power supply.
•
Three copper cables, between #10 and #24 AWG, for grounding the power supply and connecting
the power supply to the DC power source. (DC power and grounding cables are not included with
the power supply.) Recommended insulation colors are:
•
Red for the –48 V connection (–)
•
Black for the –48 V RTN connection (+)
•
Green or green with yellow stripe for the ground connection
•
Connection hardware appropriate to the installation site:
•
Hardware for connecting the power wires to the DC source
•
Hardware for connecting the ground wire to the site grounding point
•
Stripping tool
•
#1 Phillips screwdriver
•
Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
•
ESD-preventive wrist strap
•
Thermal protective gloves (required for removal of a power supply)
Preparing the Cables for an 1100 W DC Power Supply
You need three cable wires: two power input cables and one ground cable. Refer to Required Tools and
Materials for Installing an 1100 W DC Power Supply on page 206 for details.
Installing Your Extreme Networks Switch
ExtremeSwitching and Summit Switches: Hardware Installation Guide 206
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